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" RULE. from half the sum of the three sides, subtract each side separately; multiply the half sum and the three remainders together, and the square root of the product will be the area required. "
Higher Book - Page 252
by William Seneca Sutton - 1896
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Ray's Modern Practical Arithmetic: A Revised Edition of Ray's Practical ...

Joseph Ray - Arithmetic - 1903 - 364 pages
...parallelogram having the same base and altitude. 2d. When the three sides are given : Rule. — 1. From half the sum of the three sides subtract each side separately. 2. Find the product of the half -sum and the three remainders, and extract the square root of this...
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A Handbook of Chemical Engineering: Illustrated with Working ..., Volume 1

George Edward Davis - Chemical engineering - 1904 - 560 pages
...be measured. (a) Multiply the base by the perpendicular height, and divide the product by two. (b) From half the sum of the three sides, subtract each side separately, then multiply the half sum by the three remainders consecutively. The square root of this product is...
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Practical Mechanical Drawing and Machine Design, Self Taught ...

Charles Westinghouse - Machine design - 1906 - 168 pages
...D= 2i/8(8-A) (8-B) (SC) Sum of sides To find the area of any oblique angled triangle when only the three sides are given. From half the sum of the three sides, subtract each side severally. Multiply the half sum and the three remainders together and the square root of the products...
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Modern Sheet-metal Workers' Instructor: Practical Geometry, Mensuration ...

Joseph H. Rose - Sheet-metal work - 1906 - 340 pages
...A) (8— B) (8— C) 8= C Sum of sides To find the area of any oblique angled triangle when only the three sides are given. From half the sum of the three sides, subtract each side severally. Multiply the half sum and the three remainders together and the square root of the product...
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Henley's Encyclopaedia of Practical Engineering and Allied Trades ...

1906 - 582 pages
...perpendicularly to the base.) The area may also be found if the lengths of the three sides of a triangle be given. From half the sum of the three sides, subtract each side separately ; multiply the half sum and the three remainders together, and the square root of the product will...
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Henley's Encyclopędia of Practical Engineering and Allied Trades: A ...

Joseph Gregory Horner - Engineering - 1906 - 572 pages
...perpendicularly to the base.) The area may also be found if the lengths of the three sides of a triangle be given. From half the sum of the three sides, subtract each side separately ; multiply the half sum and the three remainders together, and the square root of the product will...
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Geometry: Plane Trigonometry. Chain Surveying. Compass Surveying. Transit ...

International Correspondence Schools - Building - 1906 - 620 pages
...To find the area of a triangle from the lengths of its three sides, apply the following: Rule. — From half the sum of the three sides subtract each side separately; multiply together the half sum and the three remainders and extract the square root of the product....
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The Art of Railroading: Or, The Technique of Modern Transportation, Volume 6

Calvin Franklin Swingle, Frederick John Prior - Air-brakes - 1906 - 676 pages
...21/8(8— A) (8— B) (8— C) 8= of sides To find the area of any oblique angled triangle when only the three sides are given. From half the sum of the three sides, substract each side severally. Multiply the half sum and the three remainders together and the square...
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20th Century Machine Shop Practice: Arithmetic, Practical Geometry ...

Leonard Elliott Brookes - Machine-shop practice - 1906 - 664 pages
...A) (S— B) (S— C) Sum of sides S = To find the area of any oblique angled triangle when only the three sides are given. From half the sum of the three sides, substract each side severally. Multiply the half sum and the throe remainders together and the square...
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The Boiler

Stephen Christie - Steam-boilers - 1908 - 272 pages
...given : Double the area and divide by given dimension. Rule to find area of triangle when dimensions of three sides are given : From half the sum of the three sides, subtract each side separately : multiply the half sum and the three remainders together ; the square root of the product is the area....
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